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The correct order of the spin-only magnetic moments of the following complexes is : (I) \(\left[\mathrm{Cr}\left(\mathrm…

Q1

The correct order of the spin-only magnetic moments of the following complexes is :
(I) \(\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Br}_2\)
(II) \(\mathrm{Na}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]\)
(III) \(\mathrm{Na}_3\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right](\Delta o>\mathrm{P})\)
(IV) \(\left(\mathrm{Et}_4 \mathrm{N}\right)_2\left[\mathrm{CoCl}_4\right]\)

[JEE Main 2020, 9 Jan (Shift 2)]

a

\(\text{ (III) }>\text{ (I) }>\text{ (IV) }>\text{ (II) }\)

b

\(\text{ (III) }>\text{ (I) }>\text{ (II) }>\text{ (IV) }\)

c

\(\text{ (I) }>\text{ (IV) }>\text{ (III) }>\text{ (II) }\)

d

\(\text{ (II) }>\text{ (I) }>\text{ (IV) }>\text{ (III) }\)

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